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Blunt liver trauma: a new concept for classification of liver trauma based on vessel injury
1First Department of Surgery, Hokkaido University Hospital, Sapporo, Japan.
Insights
A new classification for blunt liver trauma, based on vessel injury, aids treatment selection. This system helps predict patient outcomes, prioritizing hemostasis for hemorrhage control.
Area of Science:
- Trauma Surgery
- Hepatobiliary Surgery
- Emergency Medicine
Background:
- Blunt liver trauma management requires accurate assessment of injury severity.
- Hemorrhage from vessel injury is the primary determinant of prognosis in liver trauma.
- Existing classifications may not adequately guide treatment decisions.
Purpose of the Study:
- To clarify the pathophysiology of blunt liver trauma.
- To develop a new classification system for blunt liver trauma based on vessel injury.
- To guide the selection between non-operative and operative management.
Main Methods:
- Review of 143 consecutive cases of blunt liver trauma (43 children, 100 adults).
- Development of a novel classification system categorizing injuries into three types based on vessel involvement (Glissonian, inflow/outflow).
- Analysis of management strategies and outcomes according to the new classification.
Main Results:
- The new classification identified three types of blunt liver trauma with distinct injury patterns.
- Management strategies correlated with injury type: non-operative for Type I, surgery for Type II, extended surgery for Type III.
- Mortality rates were significantly higher in Types II and III, primarily due to hemorrhage.
Conclusions:
- The proposed classification effectively categorizes blunt liver trauma in both children and adults.
- This system aids in selecting appropriate management (non-operative vs. operative).
- The classification provides valuable prognostic information, emphasizing hemorrhage control.
Abstract:
We reviewed a consecutive 143 cases of blunt liver trauma, 43 children and 100 adults, to clarify the pathosis of liver trauma and to reasonably select treatment, non-operative or operative management. The primary determinant in the prognosis of liver trauma was clearly hemorrhage due to vessel injuries and its main treatment method was hemostasis. We developed a new concept for the classification of blunt liver trauma based on vessel injuries: I = subcapsular Glissonian vessel injuries, II = transcapsular Glissonian vessel injuries and III = in-/out-flow vessel injuries and 3 basic types were divided into 2 subtypes, respectively. Distribution of liver trauma according to the present classification was as follows: type I = 23% in child cases and 22% in adult cases, type II = 65% and 64% and type III = 12% and 14%, respectively. The main management was non-operative for type I, minor or major surgery for type II, and extended surgery for type III. The analysis of dead cases showed the following: I = 0% in child cases and 6% in adult, II = 60% and 55%; III = 40% and 39%, respectively. The first direct cause was hemorrhage: 60% in child cases and 49% in adult. The present classification was applicable for both child and adult patients, and presented a selection of management for liver trauma, suggesting the prognosis.